Yamaha FJR1300A(D) Service Manual page 572

Fault
Part
code
55 IMMOBILIZER
UNIT
56 ECU
Immobilizer system indicator light fault code indication
Units of 10: Cycles of on for 1 second and off for 1.5 seconds.
Units of 1: Cycles of on for 0.5 second and off for 0.5 second.
Example: Fault code 52
a. Light on
b. Light off
Symptom
Key code registra-
tion malfunction.
Unidentified code is
received.
8-123
IMMOBILIZER SYSTEM
Cause
Same standard key was
attempted to be regis-
tered two consecutive
times.
Noise interference or
disconnected lead/ca-
ble.
Action
Register another
standard key.
1. Check the wire
harness and
connector.
2. Replace the
main switch/im-
mobilizer unit.
3. Replace the
ECU.
Refer to "RE-
PLACING THE
ECU (engine
control unit)" on
page 8-174.